[RFC 2/3] arm: mm: Define set_memory_* functions for ARM

Catalin Marinas catalin.marinas at arm.com
Thu Jun 13 12:25:59 EDT 2013


On Wed, Jun 12, 2013 at 06:23:29PM +0100, Laura Abbott wrote:
> +int set_memory_ro(unsigned long addr, int numpages)
> +{
> +	unsigned long start = addr;
> +	unsigned long size = PAGE_SIZE*numpages;
> +	unsigned end = start + size;
> +
> +	apply_to_page_range(&init_mm, start, size, pte_set_ro, NULL);
> +	dsb();
> +	flush_tlb_kernel_range(start, end);

I think flush_tlb_kernel_range() already has a DSB.

-- 
Catalin



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